Motorhome

ABSTRACT

A motorhome is provided a vehicle longitudinal axis and a superstructure with furnishing that is arranged on the vehicle chassis and extends in the vehicle longitudinal axis, wherein the superstructure has at least one space expansion module that is displaceably attached to it transverse to the vehicle longitudinal axis and extends at least approximately along a length of at least the 0.8-fold of the entire length of the superstructure. Here, a part of the furnishing of the superstructure is arranged in the at least one space expansion module such that at least a quarter, preferably a third of the gross volume of the entire furnishing of the superstructure is arranged in the at least one space expansion module.

The present invention relates to a motorhome having a vehiclelongitudinal axis and a superstructure that is arranged on a vehiclechassis and extends with the vehicle longitudinal axis and has at leastone space expansion module that is displaceably attached to thesuperstructure transverse to the vehicle longitudinal axis and extendsat least approximately over the entire length and height of alongitudinal side of the superstructure.

Such motorhomes are known per se. In the meaning of the presentinvention motorhomes are meant to be motorized vehicles such as forexample mobile homes or caravans, but also non-motorized vehicles suchas for example trailers and house trailers, respectively. Here, itdoesn't basically matter for which purpose the motorhomes are employed.It is only important that they have a superstructure that puts up aninterior that is suitable for the permanent residence of persons. Itdoesn't basically matter for the significance of the invention whetherthe motorhome is employed for long travels or very short travels—forexample in a city. Nevertheless, the invention substantially relates tovehicles that are employed for tourism purposes, since here the benefitof the invention takes effect to a significantly large extent. However,the invention also makes sense in motorhomes that are used in thenon-tourism use such as for example the building and showman trade,delivery vehicles, e.g. for traveling food shops, or also for the usefor medical application purposes, for example a medical bloodtransfusion service. It is also conceivably to use the motorhomesaccording to the invention as mobile operation centers, especially formilitary or police operations.

The term vehicle longitudinal axis in this context has to be understoodas the axis extending substantially through the front end and the rearend of the motorhome, preferably through the center of the front end andthe center of the rear end. That is, the longitudinal axis extends inparallel to the traveling direction in which the motorhome is typicallymoved.

All the motorhomes have in common that the usable interior of thesuperstructure of the motorhome is significantly smaller and morelimited compared with immobile common, living and/or working space.Thus, the prior art for increasing the interior proposes lateral spaceexpansion modules with a drawer-like working principle arranged on thesuperstructure. These space expansion modules also referred to asslideouts offer the opportunity to increase the space of thesuperstructure of the motorhome by laterally sliding out a part of thespace that is generally laterally open toward the vehicle longitudinalaxis. That is, such slideouts often have three walls, a floor and aroof.

In order to allow the greatest possible gain in space it seems to beobvious to use space expansion modules that should extend over theentire length of the superstructure. However, in practice, suchsolutions have only rarely been realized because of concerns regardingthe drives or the statics. Because, such large slideouts are very heavy.So, until today on the market there are virtually found only motorhomeswith space expansion modules the width of which is significantly smallerthan the length of the superstructure. If a lot of space is to be gainedthen several of such smaller space expansion modules are arranged alongthe relevant side of the superstructure, e.g. on the right and on theleft of the entry to the superstructure of the motorhome.

Thus, the known motorhomes still are not usable as satisfactory as isdesired in view of immobile usable space. Because, especially thestationary areas of the sides of the superstructure between theslideouts disturb the usability of the motorhome.

Against this background it is the object of the present invention tocreate a motorhome that is even better usable than the known genericmotorhomes with at least one space expansion module available on themarket.

This problem is solved with a motorhome according to claim 1.Advantageous developments of the invention are described in thesub-claims.

That is, the motorhome according to the invention over the initiallydescribed motorhomes is characterized in that a part of the furnishingin the superstructure of the at least one space expansion module isarranged such that at least a quarter, preferably a third of the grossvolume of the furnishing of the superstructure is attached to the atleast one space expansion module.

The term furnishing is broad to understand here. In the meaning of theinvention this shall include all what is arranged in the superstructureand attached there for permanent whereabouts. That is, these areespecially all fittings that do not contribute to shroud the interior tothe outside, i.e. especially not the walls, the floor, and/or the roofof the superstructure. So, under the term furnishing there fallespecially kitchen furniture, seating furniture, reclining furniture,beds, cupboards, tables but also wet spaces, shower cabins, toiletcabins, garages, storage boxes etc. that are attached to thesuperstructure.

The term gross volume in the meaning of the invention should beunderstood as meaning that it is the product of the base surface of thefurnishing multiplied with the maximum height of the furnishing. Here,the base surface should be understood as meaning the surfacecorresponding to the projection surface of the furnishing seen from thevertical. Here, the volume can also be obtained from the sum of partialvolumes of individual furniture and parts of the furnishing.

Now, the inventive idea underlying the invention is based on thefindings that just the problems that have always been feared with thedrives or the statics of the slideouts can be solved with lessinterventions in the usability of the superstructure than the use ofvarious slideouts regarding the usability of the superstructure doinvolve. As far as that goes, in clear departure from previous solutionsnow it is not only possible to provide one slideout that extends atleast approximately over the length of the superstructure instead ofmany small ones, but this against all attempts to date now should befurnished as much as possible. This results in a significantly higherload of the at least one space expansion module, since a large part ofthe furnishing is specifically provided in the same. In this way, thereis created an interior in the superstructure that can be significantlybetter increased and better practically used. Because, disturbingstationary parts such as for example parts of the outer walls of thesuperstructure between individual slideouts may be omitted.

Here, it has to be considered that the slideout generally cannot extendcompletely over the entire length of the superstructure, because thestationary part of the superstructure needs a certain constructivethickness at its edges. As far as that goes, the phrase at leastapproximately over the entire length of a longitudinal side of thesuperstructure should be understood as meaning the whole side surface ofthe superstructure less a possible edge constitution of the stationarypart of the superstructure. However, the term can also refer to amaximum available length of a longitudinal side of the superstructure.For example, it may be that the interior formed in the superstructure isonly formed in a section along the vehicle longitudinal axis due to thepresence of a motor and/or a cooling facility in the rear of thevehicle. In this and in a general case there is meant the longitudinalside of the superstructure less the length along which there is notformed living space in the interior.

Advantageously, the at least one space expansion module further has atleast one height that corresponds to at least the 0.8-fold of themaximum headroom of the interior of the superstructure. Here, theheadroom refers to the distance between floor and ceiling of theinterior; but not to the height obtained for example in places with adome light or other extensions or fittings formed on the ceiling or thefloor. An advantage of this development is the possibility that in anextended state of the at least one space expansion module only slightdifferences in height at transitions between the superstructure and thespace expansion module are present on the floor and/or on the ceiling.Virtually no faults in the floor or in the ceiling of the superstructureoccur that noticeably limit usability.

Suitably, the superstructure has a first space expansion module and asecond space expansion module arranged opposite thereto. Here, bothrespectively extend approximately over the entire length and height of alongitudinal side of the superstructure, wherein a part of thefurnishing of the superstructure is arranged in both space expansionmodules such that at least two thirds of the gross volume of thefurnishing of the superstructure are attached to both space expansionmodules. An advantage with said arrangement is that with the help ofsaid arrangement most part of the furnishing can be laterally displacedfrom the center of the superstructure to the outside, which results in asignificant gain in space in the center of the vehicle with extendedslideouts.

Further, it is of advantage that the furnishing of the superstructure isdesigned and/or arranged such that a passageway to the at least one of akitchen, shower, toilet, bed and/or bath arranged in the superstructureremains free from furnishing, if the one or all the space expansionmodules are completely displaced in the superstructure. In this way itis ensured that also in a state of the at least one space expansionmodule that is retracted into the stationary part of the superstructurea minimum of accessibility to the present pieces of furniture ismaintained. So, the motorhome at least in parts like a conventionalmotorhome without slideout remains well usable also while driving or ina state with retracted space expansion modules.

Suitably, at least one space expansion module has a maximum depthcorresponding to the maximum depth of a kitchen furniture, a bed, and/ora seating furniture. In this way it can be achieved that no step or noprojection is present on the floor between the space expansion moduleand the superstructure that could optically or ergonomically bedisadvantageous.

It is further advantageous if at least one space expansion module has amaximum depth that is smaller than the half of the width of thesuperstructure. Such an arrangement especially permits that the spaceexpansion modules can be arranged opposite to each other such that theyeach have the same depth and at worst each occupy approximately the halfof the available width of the superstructure. Accordingly, with such adevelopment almost a doubling of the usable living space can be achievedwith largely balanced statics at the same time.

Advantageously, two space expansion modules arranged opposite in thesuperstructure are configured such that the sum of the depths of bothopposite space expansion modules is smaller than the interior width ofthe superstructure less a pass-through width preferably of at least 50cm in width. This development aims at the fact that in thesuperstructure there is always formed a corridor so that users orpassengers of the motorhome can also move through the superstructurewhen the space expansion modules are retracted into the superstructure.So, passengers for example during the trip can get to parts of thefurnishing—such as for example a bed or a toilet—even if it is arrangedin the rear part of the vehicle.

A further advantage is that it is possible to attach at least partiallyparts of the furnishing to the superstructure and/or to the vehiclechassis in this area. Specifically, these may be for example seatingfurniture with passenger restraint systems.

Suitably, in the superstructure at least one piece of furniture isarranged and configured such that it can be extended and/or displacedtransverse to the vehicle longitudinal axis such that it extends atleast partially into a space expansion module. An advantage of thisdevelopment is the integration of flexibly extendable or displaceablefurnishing into the interior of the superstructure. This way, the spacegained by the space expansion module can be gained either as usablespace for a piece of furniture or as additional free space by displacinga piece of furniture.

It is further of advantage that an entry and at least one climbingassistance, kitchen units, a refrigerator, a closet, a bathroom, atoilet, and/or a bed are arranged in or on the first space expansionmodule. Instead of the bathroom or the toilet also a wet space can bearranged that includes either of them or both components. Also a showershall be subsumable under the term wet space. A wet space issubstantially understood to be a single piece of furniture due to itstypically modular, complete design. A wet space comprises at least awater supply and a water discharge device as well as a substantiallywaterproof sealable wall of the wet space. The term kitchen units inthis context gears to at least one kitchen cupboard and/or a worktop,e.g. with a sink unit and/or a hotplate. Nevertheless, the kitchen unitscan also contain further components, in particular a refrigerator, anoven, a water tank, a boiler, a dishwasher, a washing machine, or awaste bin. Especially the specific combination of the mentioned objectsin or on the first space expansion module has proved to be advantageoussince in this way a large functionally well fitting part of thefurnishing is transferred to the slideout.

According to another development of the invention it is advantageousthat in the second space expansion module a closet and at least oneseating furniture, a bathroom, a toilet, and/or a bed are arranged. Sucha combination of the mentioned objects in the second space expansionmodule also has proved to be a particularly advantageous functionalcombination of large parts of the furnishing.

Suitably, the motorhome has at least one bed in a space expansion modulethat is arranged such that it extends in parallel to the vehiclelongitudinal axis in its longitudinal direction and is preferablyengineered such that it can be extended transverse to the vehiclelongitudinal axis. In this way it can be achieved that the bed in anextended position of the space expansion modules forms the full lyingsurface, whereby for example an extended aisle or space for furtherfurniture can be achieved. Alternatively, however the bed in itslongitudinal direction can also be arranged transverse to the vehiclelongitudinal axis in a space expansion module and preferably engineeredsuch that it can be extended transverse to the vehicle longitudinalaxis. Nevertheless, it may be of advantage to arrange a not extendablebed in a space expansion module such that it extends transverse to thevehicle longitudinal axis in its longitudinal direction. In this way,the bed for example in a retracted position of the at least one spaceexpansion module can almost completely extend over the entire width ofthe vehicle chassis, wherein only in the extended state of the spaceexpansion module an aisle of the vehicle longitudinal axis is formed. Ingeneral, a bed is understood to be a place to sleep for at least oneperson, but it is also conceivable that the bed is engineered as adouble bed, a bunk bed, or a stretcher, with and without a facility forfixing persons.

It is further of advantage when a bed is arranged in thenon-displaceable part of the superstructure such that it extends inparallel to the vehicle longitudinal axis in its longitudinal direction.Then, the bed is extended transverse to the vehicle longitudinal axis,but not transverse to the body axis of the resting person, but inparallel thereto. This reduces disturbing gaps in the lying surface.

Advantageously, in at least one space expansion module of the motorhomeas a seating furniture a bench is arranged and configured such that thisis at least partially pivotable about a horizontal pivot axis. Oneadvantage of this arrangement is that in the extended state of the atleast one space expansion module (slideout) either a gain in usableliving space can be obtained, or the space extended transverse to thevehicle longitudinal axis can be used as an extended seating.

In a further development the bench is attached to the floor and/or tothe wall of the space expansion module via movable attachment elementssuch that a back and/or a seat are pivotable from a seating position toan upright storage position. Here, it is important that the upholsteriesremain on the seat and the back, respectively, and thus, no additionalstorage space is needed.

It is further suitable for the attachment elements to be configured as alever structure such that the seat and/or the back are pivotable to theseating position by simply manually operating an operating facility,wherein preferably also the back is pivoted to an inclined position.

Suitably, at least under a part of a seating furniture of the motorhomea seat belt anchorage is attached to a supporting member of themotorhome to which at least one restraint system for at least onepassenger is arranged. So, the seating furniture can be used aspassenger seat while driving.

Moreover, it is suitable that a dinette is arranged in thenon-displaceable part of the superstructure of the motorhome that in itslongitudinal axis extends transverse to the vehicle longitudinal axisthat is preferably configured displaceable, pivotable and/orheight-adjustable. In analogy to the seating furniture by such anarrangement a flexible and space-optimized use of the interior of themotorhome can be achieved. Here, the term dinette especially gears to agroup of furniture comprising at least one piece of seating furniturethat is arranged beside and/or at least partially around a table. Here,the seating furniture and/or the table can be configured adjustable,displaceable, and/or foldable such that a seat with table, a seatwithout a table, or a lying surface can be generated.

Here it is of advantage that the tabletop can be lowered so that anupholstered seat back of the dinette arranged thereon is flush with aseat and serves as an extension of an additional lying surface. In thisway a further large additional lying surface can be created in a simplemanner.

Advantageously, a storage box accessible from the outside is arranged inone space expansion module of the motorhome, preferably under a bed.Again, the term storage box is meant to be broad. This can be anarbitrary storage space. So, it is also understood to mean a garage fora vehicle, for example a small car, a bicycle, or a jet ski, or asnowmobile. By the arrangement according to the invention it is ensuredthat an object placed in the space expansion module is always accessiblefrom the outside of the motorhome. For example, a garage can beconfigured such that an access to the storage box is only possible in anextended state of the space expansion module. However, it is alsopossible to design the storage box or the garage such that parking inand out is possible both in the retracted and the extended state of thespace expansion module.

It is further advantageous that in the non-displaceable part of thesuperstructure of the motorhome at least one wall element is arrangedthat is at least telescopic, rollable, foldable and/or pivotable withrespect to its width and which is preferably attached to thesuperstructure such that it can be pivoted at least in two parts about avertical pivot axis. In this way, it is ensured that independent of theposition of the space expansion module a wall can be created. Here, thewall element can preferably be formed transverse to the vehiclelongitudinal axis and completely or partially extend over the entirecross section of the motorhome.

In a further development the wall element has a stationary part that ispreferably configured as a load-dissipating reinforcement and then alsodissipates the loads from the roof into the floor of the superstructureand/or the space expansion module. Here, the stationary part can beconfigured as a shutter box in which a type of jalousie is rotatablyarranged about a vertical axis as a rollable part of the wall element.Further, also a floor-to-ceiling closet can be arranged in thesuperstructure and/or in the space expansion module as theload-dissipating reinforcement such that the self-supporting totallength of the roof is reduced. So, the self-supporting length can behalved or divided several times. The additional reinforcement results inthat the roof of a space expansion module does not give away to thepressure of an inflatable seal. In this way, tightness is improved.

Advantageously, in the non-displaceable part of the superstructure ofthe motorhome a bed configured as a double bed is arranged, wherein thebed is preferably arranged symmetrically to the vehicle longitudinalaxis and in the rear part of the superstructure in the direction oftravel of the motorhome. In this way, the double bed can be used both inthe retracted and in the extended state of the space expansion modules.

Moreover, it is suitable that the bed configured as a double bed isconfigured such that it protrudes at least partially into at least onespace expansion module when this is completely pushed into thesuperstructure or when the space expansion modules are pushed into thesuperstructure. So, even with a relatively broad bed there still resultsa good use of space.

Advantageously, a bathroom is arranged in the non-displaceable part ofthe superstructure of the motorhome, wherein the bathroom is preferablyarranged symmetrically to the vehicle longitudinal axis and in the rearpart of the superstructure in the direction of travel of the motorhome.

Suitably, at least a refrigerator, a sink and a cooker are arranged inthe kitchen unit of the motorhome. These objects constitute the coreelements of what is commonly referred to as the kitchen.

It is further of advantage that at least one space expansion module hasat least one movably, displaceably and/or telescopically configuredsupply and/or disposal line. By the presence of said components it isensured that various media streams can be exchanged between the vehiclechassis and the at least one space expansion module. The term supplyand/or disposal line particularly gears to water-supply lines,gas-supply lines, and/or electric lines.

Advantageously, at least one space expansion module of the motorhome hasat least one supply and/or disposal line that is arranged such that itextends at least in the area of a floor of the space expansion moduleoutside the space expansion module. The arrangement of the supply and/ordisposal line outside the space expansion module makes it possible toarrange the line without disturbing the interior, but also to maintainthe supply and/or disposal line in a simple manner.

Moreover, it is suitable that at least one space expansion module has atank. Here, the term tank gears to a storage container for stocking upsolid, liquid, and/or gaseous media. Here, the tank can arbitrarily beattached to, in, on, or under the space expansion module.

It is advantageous to displaceably attach a climbing assistance via aguide to the vehicle chassis and/or to the superstructure and preferablyconfigure it as fold-out stairs. The climbing assistance can have astep-, ramp- and/or ladder-like structure that is movably and/orstationary arranged on or in the motorhome. Suitably, the climbingassistance is arranged below a door or an access opening to the interiorof the superstructure, whereby it is possible to enter or leave theinterior of the motorhome via the first space expansion module.

Advantageously, at least one sliding bearing for slidingly supportingthe space expansion module is arranged between the stationary part ofthe superstructure and a space expansion module that preferably has asliding member of a sliding material, especially PTFE, that interactswith an opposite sliding surface. The sliding material is understood tobe a material that in combination with the sliding surface causes areduction in friction. The sliding surface advantageously is made of anabrasion-resistant material, in particular a metallic material. It isparticularly advantageous to configure the sliding surface of stainlesssteel that is weather-resistant and ensures a permanentlyabrasion-resistant sliding surface. Further, the sliding member can beconfigured as a rolling member that rolls on the sliding surface.

Suitably, at least one roller bearing for supporting the space expansionmodule is arranged between the stationary part of the superstructure anda space expansion module. This is of advantage in that the underlyingfloor of the stationary part of the superstructure is treated with careby the rolling. Especially, if the floor is a scratch-sensitive floorthis configuration of the bearing makes sense. Here, it is suitable todistribute the pressure if possible along the whole edge of the spaceexpansion module. This can be done with a very broad but also with atlot of small rollers. It is also practical to match a property of thematerial of the roller (e.g. hard or soft roller) to the floorconditions of the floor of the stationary part of the superstructure.This with the aim to avoid dents or running marks in the floor as far aspossible.

In a further development at least a sliding bearing and/or a rollerbearing are arranged on the space expansion module and/or the stationarypart of the superstructure in the area of a load-dissipatingreinforcement. This is suitably close to the inner edge of the spaceexpansion module. It is also useable that they dissipate the loads tosuitable running surfaces on the floor and/or the roof of thesuperstructure.

Advantageously, at least in certain areas a mudguard and a seal,preferably an inflatable seal are arranged between the stationary partof the superstructure and a space expansion module. Here, the seal isarranged between the mudguard and the interior. This two-stage sealingof the interior from outer influences, especially dirt, moisture andheat, results in a reliable sealing system. In this context, the termmudguard represents a touching seal, especially a sealing lip that isconfigured such that dirt such as for example leaves or sand do notreach the actual sealing behind. Here, it is conceivable to use anelastic sealing lip of a flexible material such as for example gum orthe like. Alternatively, also a brush-like structure can be employed.

The inflatable seal can preferably be configured as a circumferentialseal, wherein at least the two lateral gaps and the roof gap are sealedby the circumferential seal. However, it is also conceivable to usesingle sealing segments dividing the total length of the gaps intoindividual sealing segments. Further, it is also possible to configurethe seal as a rigid member that is attached either to the spaceexpansion module or to the non-displaceable part of the superstructureof the motorhome. Also, the mudguard can be attached either to the spaceexpansion module or to the non-displaceable part of the superstructureof the motorhome. Here, it is irrelevant whether the relative motion ofthe mudguard and the seal are attached to a common component or whetherfor example the inner seal is attached to the space expansion module andthe outer mudguard is attached to the non-displaceable part of thesuperstructure.

Preferably, the seal and/or the mudguard are arranged in a reinforcementprofile that preferably has at least one abutment for a forcetransmission means. The reinforcement profile causes a stiffening of theroof of the superstructure. This has the effect that the seal fitsbetter between the stationary part of the superstructure and the spaceexpansion module. This applies all the more if an inflatable seal isused.

Here, the force transmission means is to lock the space expansion modulein the retracted and/or extended state on the stationary part of thesuperstructure. It can be configured as a profile having an angular edgethat is attached outside of and/or inside the wall and/or the roof ofthe space expansion module and preferably narrow. Also, it canpositively be engaged with the reinforcement profile in a receivingarea.

Further synergies are achieved when the reinforcement profile has anattachment option for possible roof extension such as for example arollable awning.

Advantageously, at least one drive for moving at least one spaceexpansion module transverse to the vehicle axis, especially a spindledrive, is arranged at the superstructure and/or at a space expansionmodule. As the drive mechanically, but also hydraulically,pneumatically, or electrically driven drives can be used.

The use of a spindle drive has the advantage that it requires littleinstallation space and enables an effective transduction of a rotatorymovement of a drive shaft, for example an electric motor, into atranslatory movement for laterally displacement of the space expansionmodules. A further particular advantage of spindle drives is the highholding forces that can be absorbed in the direction of the spindlelongitudinal axis. Independent of the deflection position of the spindledrive thus, it can be ensured that such forces can be transferred viathe toothing of the spindle drive without a relative motion betweenspindle and the stationary part of the drive being ensued. This isparticularly advantageous with high loadings of the space expansionmodules. Further, the drive can arrest the retracted space expansionmodules in the stationary part of the superstructure without anadditional locking device. By the high holding force also very highacceleration forces as could occur with extreme cornering can safely beabsorbed. All in all, the space expansion modules with spindle drivesare simply, unambiguously, and safely locked in the stationary part ofthe superstructure.

Of particular advantage is the use of four drives that are preferablysecured in the corners of the non-displaceable part of thesuperstructure. These permit to move the space expansion module in aparticularly safe manner. For example, the extending operation can beperformed by means of a pushing mode of the lower two drives and theretracting operation can be performed by means of a pulling mode of theupper two drives. So, tilting of the space expansion modules isprevented.

Moreover, it is suitable to arrange the first and the second spaceexpansion modules symmetrically to the vehicle longitudinal axis in thesuperstructure. With the help of this arrangement it can be ensured thatin the extended state of the space expansion modules an approximatelybalanced statics of the parked motorhome can be achieved. The termsymmetrically to the vehicle longitudinal axis substantially refers tothe depth of the space expansion modules. Accordingly, it is notmandatory that the space expansion modules that are symmetricallyarranged to the vehicle longitudinal axis in the superstructure as suchare configured in mirror symmetry to each other. The extension of thespace expansion module in height and length of the lateral surface ofthe motorhome can be different.

It is further of advantage to attach at least one drive to thesuperstructure that is symmetrically to the vehicle longitudinal axisand configured such that it can move two space expansion modules at thesame time transverse to the vehicle longitudinal axis. Optionally, hereby means of a transmission unit it can be chosen whether one or both ormore space expansion modules are moved at the same time or sequentially.Here, it is important that one motor each is present per drive, wherebythe complexity of the total system can be reduced. In a particularlypreferred development of the invention four drives in total are presentin the immobile part of the superstructure in the corners of twoopposite space expansion modules that are mirror-symmetrically to avertical vehicle center axis. According to this development said drivepermits a simultaneous or sequential force application into the oppositecorners of two space expansion modules.

Advantageously, a space expansion module is slideably connected to thesuperstructure via at least two guiding elements. These could be forexample two telescoping rails among which one rail is attached to thestationary part of the superstructure and the other to the movable spaceexpansion module. Especially by telescoping guiding elements aparticularly space-saving attachment of the space expansion module isobtained.

Moreover, it is suitable that the drive and the guiding elements eachare combined in one assembly. Such assemblies are easy to install.

Advantageously, the assembly is preferably arranged in the interior ofthe stationary part of the superstructure and/or at least one spaceexpansion module. This serves for shielding the assembly againstenvironmental influences.

In the following the invention is explained in detail with reference toexamples shown in the drawings. Here:

FIG. 1 schematically shows a perspective view of a first example of amotorhome according to the invention with a retracted space expansionmodule;

FIG. 2 schematically shows a perspective view of the motorhome shown inFIG. 1 with an extended space expansion module;

FIG. 3 schematically shows a horizontal longitudinal section through thesuperstructure of the motorhome shown in FIG. 1 with a retracted spaceexpansion module;

FIG. 4 schematically shows the horizontal longitudinal section shown inFIG. 3 with extended space expansion modules;

FIG. 5 schematically shows a horizontal longitudinal section through thesuperstructure of a motorhome according to the invention in accordancewith a second embodiment with retracted space expansion modules;

FIG. 6 schematically shows the horizontal longitudinal section shown inFIG. 5 with extended space expansion modules;

FIG. 7 schematically shows a perspective exterior view of asuperstructure for a motorhome according to the invention with extendedspace expansion modules seen from diagonally below;

FIG. 8 schematically shows a detailed view of a climbing assistanceaccording to the invention;

FIG. 9.1 schematically shows a cross section of a superstructureorthogonal to the vehicle longitudinal axis with retracted spaceexpansion modules;

FIG. 9.2 schematically shows the area A shown in FIG. 9.1 in an enlargedview;

FIG. 9.3 schematically shows the area B shown in FIG. 9.1 in an enlargedview;

FIG. 9.4 schematically shows the area C shown in FIG. 9.1 in an enlargedview;

FIG. 10.1 schematically shows a cross section of a superstructureorthogonal to the vehicle longitudinal axis with extended spaceexpansion modules;

FIG. 10.2 schematically shows the area A shown in FIG. 10.1 in anenlarged view;

FIG. 10.3 schematically shows the area B shown in FIG. 10.1 in anenlarged view;

FIG. 10.4 schematically shows the area C shown in FIG. 10.1 in anenlarged view;

FIG. 11 schematically shows an enlarged view of FIG. 10.1;

FIG. 12 schematically shows areas A and B shown in FIG. 9.1 in anenlarged view with a drive unit; and

FIG. 13 schematically shows areas A and B shown in FIG. 10.1 in anenlarged view with a drive unit;

FIG. 14 schematically shows area D shown in FIG. 10.1 in an enlargedview with a 2nd variant of the reinforcement profile;

FIG. 15 schematically shows the reinforcement profile shown in FIG. 14in the area of the outer force transmission means;

FIG. 16 schematically shows the reinforcement profile shown in FIG. 15with an extended slideout;

FIG. 17 schematically shows a 3rd variant of the reinforcement profilewith attachment option; and

FIG. 18 schematically shows the force transmission means shown in FIG.15 in a spatial view.

FIG. 1 shows a motorhome 1 according to the invention by means of aperspective view. It has a vehicle longitudinal axis 2 and a vehiclechassis 3 onto which a superstructure 4 is built that extends in thevehicle longitudinal axis 2. The superstructure 4 has a space expansionmodule 5 at its side that is attached to the stationary part of thesuperstructure 4 displaceably transverse to the vehicle longitudinalaxis 2. The space expansion module 5 in the example shown extends atleast approximately over the entire length and height of a longitudinalside of the superstructure 4 of the motorhome 1.

In the state illustrated in FIG. 1 the space expansion module 5 is in aretracted position. An extended position of the space expansion module 5is illustrated in FIG. 2.

The interior of the first example of a motorhome according to theinvention is illustrated in FIG. 3 and FIG. 4. There is shown ahorizontal longitudinal section through the superstructure 4 of themotorhome 1. The motorhome 1 in addition to the first space expansionmodule 5 has an opposite second space expansion module 6. Both spaceexpansion modules 5 and 6 are configured in mirror symmetry to thevehicle center.

As can be seen from FIG. 3, there is still present a passageway 7 in theretracted state of the space expansion modules 5 and 6 that permitsaccess at least to parts of the furnishing. So, in the retracted stateof the space expansion modules 5 and 6 for example the kitchen 8, theshower 9, the toilet 10, and/or the bed 11 can be reached. In theexample shown the shower 9 and the toilet 10 are combined in a bathroom12.

According to the invention a large part, in this case even thepredominant part of the furnishing is attached within the spaceexpansion modules 5 and 6. In the embodiment shown the depth of thespace expansion modules corresponds to the structure-related extensionin depth of the kitchen furniture that are part of the kitchen 8.Accordingly, in an extended state of the space expansion modules 5 and 6the kitchen 8 is completely displaced transverse to the vehiclelongitudinal axis to the outside, whereby the passageway 7 in theinterior of the superstructure 4 significantly increases. The sum of thedepths of the space expansion modules 5 and 6 in the embodiment shown issmaller than the width of the superstructure 4 of the motorhome 1. So itis ensured that in the retracted state of the space expansion modules 5and 6 a passageway 7 having a width of at least 50 cm is present.

In the second space expansion module 6 a seating furniture 13 isarranged transverse to the vehicle longitudinal axis that both can bedisplaced with the space expansion module 6 to the outside and extendedtransverse to the vehicle longitudinal axis 2.

The furnishing in the example shown is divided as follows. In the firstspace expansion module 5 there are arranged an entry 14 and a notillustrated climbing assistance 15, a kitchen unit 16, a refrigerator17, and a closet 18. In the second space expansion module 6 there arearranged a closet 18, a seating furniture 13 and a bath 12. Moreover, inthe rear part of the vehicle a non-displaceable bed 11 is arranged inparallel to and along the vehicle longitudinal axis 2. The bed 11configured as a double bed in a retracted state of the space expansionmodules 5 and 6 partially protrudes into them.

Moreover, the embodiment illustrated in FIG. 3 and FIG. 4 has twotelescopic wall elements 19 that are configured as two pieces. Thetelescopic guide permits to adapt the wall surfaces transverse to thevehicle longitudinal axis 2. This is particularly useful to form a wallbetween the stationary part of the superstructure 4 and the spaceexpansion modules 5 and 6 in the extended state of the space expansionmodules 5 and 6. Moreover, the wall element 19 in the retracted statecan be pivoted about a vertical axis, wherein the wall element 19 isattached to the non-displaceable part of the superstructure.

A second embodiment of the motorhome 1 according to the invention isshown in FIG. 5 and FIG. 6 again as a horizontal longitudinal section.The motorhome 1 again has two space expansion modules 5 and 6 that areboth configured symmetrically to the vehicle longitudinal axis. Alsohere again a predominant part of the furnishing is arranged inside thespace expansion modules 5 and 6. As in the first embodiment also here bya practical arrangement of the furniture and design of the slideouts 5,6 a passageway 7 is formed that permits access to essential parts of thefurnishing.

In the second embodiment the depth of the space expansion modules 5, 6corresponds to the depth of the furniture that are part of the kitchen8. Accordingly, in the extended state of the space expansion modules 5and 6 the kitchen 8 is completely displaced transverse to the vehiclelongitudinal axis to the outside, whereby the passageway 7 in theinterior of the superstructure 4 significantly increases. The sum of thedepths of the space expansion modules 5 and 6 in the embodiment shown issmaller than the width of the superstructure 4 of the motorhome 1. So,it is ensured again that in the retracted state of the space expansionmodules 5 and 6 a passageway 7 having a width of at least 50 cm ispresent.

In the second space expansion module 6 a seating furniture 13 isarranged that is oriented transverse to the vehicle longitudinal axisand both can be displaced with the space expansion module 6 to theoutside, but also extended transverse to the vehicle longitudinal axis2. The furnishing in the example shown is divided as follows:

In the first space expansion module 5 there are arranged an entry 14 anda not illustrated climbing assistance 15, a kitchen unit 16, arefrigerator 17 and a bed 11.

In the second space expansion module 6 there are arranged a closet 18 orkitchen cupboard 19, a seating furniture 13 and a second bed 11.Moreover, in the rear part of the vehicle a non-displaceable bathroom 12is arranged in parallel to and along the vehicle longitudinal axis 2.

Both beds 11 each are attached in the space expansion modules 5 and 6,wherein the bed 11 of the first space expansion module 5 can be extendedas a double bed transverse to the vehicle longitudinal axis.

Moreover, the embodiment illustrated in FIG. 5 and FIG. 6 has atelescopic wall element 19, wherein the telescopic guide permits anadaption of the wall surface in a direction transverse to the vehiclelongitudinal axis 2. This is particularly useful to achieve aclosed-surface wall in the extended state of the space expansion modules5 and 6. Moreover, the wall element 19 in the retracted state can bepivoted about a vertical axis, wherein the wall element 19 is attachedto the non-displaceable part of the superstructure 4.

FIG. 7 shows a perspective exterior view of a superstructure 4 for amotorhome 1 according to the invention with extended space expansionmodules 5 and 6. On the first space expansion module 5 a climbingassistance 15 having a guide 20 is displaceably attached to the vehiclechassis 3 and to the superstructure 4. In the example shown in FIG. 7the climbing assistance is configured as fold-out stairs. Further, onthe outer wall of the space expansion module an entry 14 and a storagebox 21 are provided. In the embodiment shown in FIG. 7 the storage boxis configured as a garage that is accessible from the outside andextends below the not illustrated bed 11 in the interior.

Moreover, a flexible supply and disposal line 22 is arranged extendingon the floor outside of the first space expansion module 5 whichestablishes a connection by means of a profile 23 to the kitchen 8. Inthe supply line, on the one hand, wastewater from the kitchen can bedrained away and on the other hand fresh water from a not illustratedtank 24 can be supplied. In a further not illustrated embodiment thesupply or disposal line 22 is configured displaceable and/or telescopic.

The climbing assistance 15 in the embodiment shown in FIG. 8 isconfigured as fold-out stairs 24. The stairs 24 together with the stairbox 25 are attached outside to the space expansion module 5 and areguided over a guide 21 along the chassis 3 of the superstructure 4.

FIGS. 9.1 to 9.4 schematically show a cross section through thesuperstructure 4 orthogonal to the vehicle longitudinal axis 2 withretracted space expansion modules 5 and 6. Here, FIG. 9.1 represents anoverview with three marked areas A, B and C that each are illustratedenlarged in the figures, FIG. 9.2 (area A), FIG. 9.3 (area B) and FIG.9.4 (area C).

In analogy to the representations of FIGS. 9.1 to 9.4, FIGS. 10.1 to10.4 show the same cross section of the superstructure 4, but withextended space expansion modules 5 and 6. Areas A, B and C are identicalto the areas of the FIGS. 9.1 to 9.4, however due to the relativelymoved space expansion modules 5 and 6 other components become visible.

FIG. 9.2 with area A shows a central portion of the roof of thestationary part of the superstructure 4 to the inside of which the roofof the space expansion module 5 fits. In the retracted state of thespace expansion module 5 illustrated in FIG. 9.2 in area A thecircumferential inner edge 26 of the space expansion module 5 can beseen. Between the circumferential inner edge 26 and the roof of thesuperstructure 4 a sliding bearing for slidingly supporting the spaceexpansion module 5 is arranged in the stationary part of thesuperstructure 4. The sliding bearing among others comprises a movedsliding member 27 that is attached to the space expansion module 5 andthat slides on a stationary sliding surface 28 that is formed on thestationary part of the superstructure 4. In the example shown thesliding member 27 composed for example of PTFE slides on asurface-treated stainless steel sliding surface 28. A stopping device 30that is attached to the stationary part of the superstructure 4 andforms an abutment for the circumferential inner edge of the spaceexpansion module 5 serves to limit the relative motion in the retractingdirection 29. FIG. 10.2 shows the area A in an extended position of thespace expansion module 5.

FIG. 9.3 with area B shows an outer portion of the roof of thestationary part of the superstructure 4 to the inside of which the roofof the space expansion module 5 fits. In area B the sliding bearing hasan additional stationary sliding member 31 located on the stationarypart of the superstructure 4 that serves as an abutment for an extendingdirection 32 at the same time. The stationary sliding member 31 slideson a sliding surface 33 formed on a circumferential inner side 26 of thespace expansion module 5.

Accordingly, the sliding bearing is substantially composed of astationary sliding surface 28 on which a sliding member 27 slides and astationary sliding member 31 that slides on a sliding surface 33. Thestationary components are attached to the stationary part of thesuperstructure 4, the moved components to the adjacent space expansionmodule.

In the embodiment shown the moved sliding member 27 has a cross sectionthat becomes conically broader toward the sliding surface and is held bya Y profile at the space expansion element 5. The stationary slidingmember 31 has a bevel that is complementary to the bevel of the movedsliding member 27 and attached on an inner side of the stationary partof the space expansion module 5. FIG. 10.3 illustrates the engagement ofthe movable sliding element 27 with the stationary sliding element 33,whereby the maximum extending position of the space expansion module 5is defined.

In area B between the sliding bearing and the vicinity a mudguard 34 anda seal 35 are formed. In the embodiment shown the mudguard 34 and theseal 35 together with the stationary sliding element 31 are attached tothe inner side of the stationary part of the space expansion module 5.The mudguard 34 substantially forms an elastic mud lip 36 that lies onthe moved sliding surface 33 with an appropriate biasing for an extendedstate of the space expansion module 5. Spatially inside behind themudguard there is located the seal 35 that is configured as aninflatable, circumferential seal in the example shown.

FIG. 9.2 with area C shows an outer portion of the floor of thestationary part of the superstructure 4 along which the floor of thespace expansion module 5 is retracted and extended. The circumferentialcomponents illustrated in FIG. 9.2, mudguard 34 and seal 35, in area Cabut to a rolling surface 37 that is also formed on a stationary area ofthe superstructure 4. In FIG. 10.4 illustrating the extended state ofthe space expansion element 5 there is located a rolling member 38 of aroller bearing 39 immediately, but without contact to a stop bar 40 thatabuts to the seal 35.

In the previous embodiments it was exemplarily dealt with the firstspace expansion module 5. The described features further also apply tothe second and further space expansion modules.

FIG. 11 shows an enlarged view of the cross section according to FIG.10.1. To realize the retracting and extending movement of the spaceexpansion modules 5 and 6 a drive 41 is provided that is configured as aspindle drive in the case shown. The relative movement of the spaceexpansion modules 5 and 6 takes place via guiding elements 42 that aredisplaceably connected to the stationary part of the superstructure 4.In the embodiment shown, the drive 41 and the guiding elements 42 areconfigured as an assembly that is arranged in the interior of thesuperstructure 4.

Four individual assemblies in total for moving the space expansionmodules 5, 6 are provided, wherein the assemblies each are attached inthe corners of the space expansion modules 5 and 6. By triggering theindividual assemblies separately and controlled with distance sensorsjamming of the space expansion modules 5 and 6 with the stationary partof the superstructure 4 can be prevented.

FIG. 12 again shows an enlarged partial illustration of the viewaccording to FIG. 9.1. There are illustrated the two areas A and B, butin a sectional plane that additionally depicts the drive 41. There isshown the superstructure 4 with a retracted space expansion module 5.Here, the drive 41 is configured as a spindle drive that is attached toa drive seat 43 on the stationary part of the superstructure. Further,the drive 41 comprises an electric motor 44 that moves a spindle 46 viaa transmission unit 45. The spindle 46 together with a guide tube 47forms a telescopic lance 48 that is attached to the space expansionmodule 5 by means of an anchoring sheet 49. In the embodiment shown, thedrive 41 is configured in a corner of the superstructure 4, whereby theloss of space by the described components for retracting and extendingthe space expansion module 5 is kept to a minimum.

FIG. 13 shows the identical area of the superstructure as FIG. 12, butwith the extended space expansion module 5. This illustrationparticularly explains how the spindle 46 together with the guide tube 47forms the telescopic lance 48. The spindle 46 extends inside the guidetube 47 up to the transmission unit 45 that meshes with the spindle 46via a toothing.

Now, in FIG. 14 a variant of the corner profile shown in FIG. 10.3 canbe seen. Here, the corner profile is configured as reinforcement profile50 of metal that includes the edge of the slideout 6 and is screwed onthe edge of the slideout 6 by means of screws 51. The screws 51 arecovered with stoppers 56.

The reinforcement profile 50 has an outer abutment 52 and a second innerabutment 54. With the slideout retracted the force transmission means 53mounted to the slideout 6 fits to the abutment 52. By forming the forcetransmission means 53 with an oblique flank or tilted angle,respectively, a positive locking of the slideout 6 with thesuperstructure 4 is obtained. In this way, the seal 35 can be inflatedwith higher pressure than without said locking. Also, when the vehicledrives the suction wind cannot open the gap between the slideout 6 andthe superstructure 4. This all results in that the tightness isimproved.

In FIG. 16 it is apparent how the inner force transmission means 57 fitsto the inner abutment 54 of the reinforcement profile 50. This is thecase whenever the slideout 6 is completely extended. Also here, formingensures that the gap between the slideout 6 and the stationary part ofthe superstructure 4 cannot increase, e.g. when the seal 35 is inflated.

Now in FIG. 17 a further variant of the reinforcement profile 50 isshown. Here, it additionally comprises an attachment option 55. This canbe configured as a railing, for example. So, rollable awnings or thelike can be attached to the roof of the superstructure 4. Said evenlarger cross section provides for an even higher stiffening by theprofile 50.

Now in FIG. 18 again a spatial view to the outer force transmissionmeans 53 is apparent. It is a relative narrow claw-like part of metal inthe embodiment shown.

REFERENCE SYMBOLS

1. motorhome2. vehicle longitudinal axis3. chassis4. superstructure5. first space expansion module6. second space expansion module7. passageway8. kitchen9. shower10. toilet11. bed12. bath13. seating furniture14. entry15. climbing assistance16. kitchen unit17. refrigerator18. closet19. wall element20. guide21. storage box22. supply and disposal line23. profile24. stairs25. stair box26. circumferential inner edge27. moved sliding member28. stationary sliding surface29. retracting direction30. stopping device31. stationary sliding member32. extending direction33. moved sliding surface34. mudguard35. seal36. mud lip37. rolling surface38. rolling body39. rolling bearing40. stop bar41. drive42. guide elements43. drive seat44. electric motor45. transmission unit46. spindle47. guide tube48. telescopic lance49. anchoring sheet50. reinforcement profile51. screw52. outer abutment53. outer force transmission means54. inner abutment55. attachment option56. stopper57. inner force transmission means

1. A motorhome comprising a vehicle longitudinal axis and asuperstructure with furnishing that is arranged on the vehicle chassisand extends in the vehicle longitudinal axis, wherein the superstructurehas at least one space expansion module that is displaceably attached toit transverse to the vehicle longitudinal axis and extends at leastapproximately along a length of at least the 0.8-fold of the entirelength of the superstructure, wherein a part of the furnishing of thesuperstructure is arranged in the at least one space expansion modulesuch that at least a quarter, preferably a third of the gross volume ofthe furnishing of the superstructure is attached to the at least onespace expansion module.
 2. The motorhome according to claim 1, whereinthe at least one space expansion module further at least has a heightthat corresponds to at least the 0.8-fold of the maximum headroom of theinterior of the superstructure.
 3. The motorhome according to claim 1,wherein the superstructure has a first space expansion module and asecond space expansion module arranged opposite thereto, that bothextend at least approximately over the entire length and height of alongitudinal side of the superstructure, wherein a part of thefurnishing of the superstructure is arranged in both space expansionmodules such that at least two thirds of the gross volume of the wholefurnishing of the superstructure are attached to both space expansionmodules.
 4. The motorhome according to claim 1, wherein the furnishingof the superstructure is designed or arranged such that a passageway toat least one of a kitchen, shower, toilet, bed or bath arranged in thesuperstructure remains free from furnishing, if the one or all the spaceexpansion modules are completely displaced in the superstructure.
 5. Themotorhome according to claim 3, wherein at least one space expansionmodule has a maximum depth corresponding to the maximum depth of akitchen furniture, a bed, and/or a seating furniture.
 6. The motorhomeaccording to claim 1, wherein at least one space expansion module has amaximum depth that is smaller than the half of the width of thesuperstructure.
 7. The motorhome according to claim 5, wherein two spaceexpansion modules arranged opposite in the superstructure are configuredsuch that the sum of the depths of both opposite space expansion modulesis smaller than the interior width of the superstructure, less apass-through width preferably of at least 50 cm in width.
 8. Themotorhome according claim 6, wherein in the superstructure at least onepiece of furniture is arranged and configured such that it can beextended and displaced transverse to the vehicle longitudinal axis suchthat it extends at least partially into a space expansion module.
 9. Themotorhome according to claim 7, wherein an entry and at least oneclimbing assistance, kitchen units, a refrigerator, a closet, abathroom, a toilet, and/or a bed are arranged in or on the first spaceexpansion module.
 10. The motorhome according to claim 8, wherein in thesecond space expansion module a closet and at least one seatingfurniture, a bathroom, a toilet, and/or a bed are arranged.
 11. Themotorhome according to claim 1, wherein at least one bed in a spaceexpansion module is arranged such that it extends in parallel to thevehicle longitudinal axis in its longitudinal direction and ispreferably engineered such that it can be extended transverse to thevehicle longitudinal axis.
 12. The motorhome according to claim 1,wherein at least one bed is arranged in the non-displaceable part of thesuperstructure such that it extends in parallel to the vehiclelongitudinal axis in its longitudinal direction.
 13. The motorhomeaccording to claim 1, wherein in at least one space expansion module asa seating furniture a bench is arranged and configured such that this isat least partially pivotable about a horizontal pivot axis.
 14. Themotorhome according to claim 1, wherein the bench is attached to thefloor or to the wall of the space expansion module via movableattachment elements such that a back or a seat are pivotable from aseating position to an upright storage position.
 15. The motorhomeaccording to claim 14, wherein the attachment elements are configured aslever structure such that the seat or the back are pivotable to theseating position by simply operating an operating facility, whereinpreferably also the back is pivoted to an inclined position.
 16. Themotorhome according claim 1, wherein at least under a part of a seatingfurniture a seat belt anchorage is attached to a supporting member ofthe motorhome to which at least one restraint system for at least onepassenger is arranged.
 17. The motorhome according to claim 1, wherein adinette is arranged in the non-displaceable part of the superstructurethat in its longitudinal axis extends transverse to the vehiclelongitudinal axis, in which at least a seating furniture or a tabletopare configured displaceable, pivotable, height-adjustable or extendablein the longitudinal direction.
 18. The motorhome according to claim 17,wherein the tabletop can be lowered so that an upholstered seat back ofthe dinette arranged thereon is flush with a seat and serves as anextension of an additional lying surface.
 19. The motorhome according toclaim 1, wherein any of the a storage box accessible from the outside isarranged in one space expansion module, preferably under a bed.
 20. Themotorhome according to claim 1, wherein in the non-displaceable part ofthe superstructure at least one wall element is arranged that is atleast partially telescopic, rollable, foldable or pivotable with respectto its width and which is preferably attached in the non-displaceablepart of the superstructure.
 21. The motorhome according to claim 20,wherein the wall element has a stationary part that is preferablyconfigured as a load-dissipating reinforcement and then also dissipatesthe loads from the roof into the floor of the superstructure and/or thespace expansion module.
 22. The motorhome according to claim 1, whereinat least a floor-to-ceiling closet is arranged in the superstructure orin the space expansion module as the load-dissipating reinforcement suchthat the self-supporting total length of the roof is reduced.
 23. Themotorhome according to claim 1, wherein in the non-displaceable part ofthe superstructure a bed configured as a double bed is arranged, whereinthe bed is preferably arranged symmetrically to the vehicle longitudinalaxis and in the rear part of the superstructure in the direction oftravel of the motorhome.
 24. The motorhome according to claim 23,wherein the bed configured as a double bed is configured such that itprotrudes at least partially into at least one space expansion modulewhen this is completely pushed into the superstructure or when the spaceexpansion modules are pushed into the superstructure.
 25. The motorhomeaccording to claim 1, wherein a bathroom is arranged in thenon-displaceable part of the superstructure, wherein the bathroom ispreferably arranged symmetrically to the vehicle longitudinal axis andin the rear part of the superstructure in the direction of travel of themotorhome.
 26. The motorhome according to claim 4, wherein at least ashower, a washstand, or a toilet, all preferably attached in a spaceexpansion module, are arranged in the bathroom.
 27. The motorhomeaccording to claim 8, wherein any of at least a refrigerator, a sink anda cooker are arranged in the kitchen unit. 28-31. (canceled)
 32. Themotorhome according to claim 1, wherein at least one sliding bearing forslidingly supporting the space expansion module is arranged between thestationary part of the superstructure and a space expansion module thatpreferably has a sliding member of a sliding material, especially PTFE,that interacts with an opposite sliding surface.
 33. The motorhomeaccording to claim 1, wherein at least one roller bearing for rollinglysupporting the space expansion module is arranged between the stationarypart of the superstructure and a space expansion module.
 34. Themotorhome according to claim 1, wherein at least a sliding bearing or aroller bearing is arranged on the space expansion module or on thestationary part of the superstructure in the area of a load-dissipatingreinforcement.
 35. The motorhome according to claim 1, wherein at leastin certain areas a mudguard and a seal, preferably an inflatable sealare arranged between the stationary part of the superstructure and aspace expansion module, wherein the seal is arranged between themudguard and the interior.
 36. The motorhome according to claim 35,wherein the seal and/or the mudguard are arranged in a reinforcementprofile that preferably has at least an abutment for at least one forcetransmission means.
 37. The motorhome according to claim 35, wherein thereinforcement profile has an attachment option for possible roofextensions.
 38. The motorhome according to claim 1, wherein at least onedrive, especially a spindle drive, is arranged at the superstructure orat the space expansion module to move at least one space expansionmodule transverse to the vehicle longitudinal axis.
 39. The motorhomeaccording to claim 3, wherein the first and the second space expansionmodules are arranged symmetrically to the vehicle longitudinal axis inthe superstructure. 40-43. (canceled)